[R-390] Variacs

[Richard Biddle]

I will still use a panel mount 5 amp variac for the R-390A with an =
isolation transformer in front of it for a slow power-up.   Paranoia to =
prevent power transformer thump.  Never did try the soft-start with the =
RTC.

A friend recently handed me a box with an interesting gadget =E2=80=93 a =
Chicago Standard Transformer Corporation P-6161 Isolation Transformer.  =
Primary is 125/115/105 volts switch selectable with a 115V secondary @ =
250 watts.   Now all I need to do is build a PIC microcontroller to =
monitor the line voltage and a relay to select the primary =E2=98=BA

73 de Richard W5SRB